65d57a07e0
When this command is run on CI, `yarn build` has already been run, so this was unnecessarily building angular.io again (adding ~4mins to the `aio` job). When this command is run locally, it is most often about testing a new `lighthouse` version/config, so you don't need to build angular.io over and over (and if necessary, one can always run `yarn build` manually). Closes #19633